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• W3093721844 endingPage "113527" @default.
• W3093721844 startingPage "113527" @default.
• W3093721844 abstract "Evidence suggests there are two treatment-resistant schizophrenia subtypes (i.e. early treatment resistant (E-TR) and late-treatment resistant (L-TR)). We aimed to develop prediction models for estimating individual risk for these outcomes by employing advanced statistical shrinkage methods. 239 first-episode schizophrenia (FES) patients were followed-up for approximately 5 years after first presentation to psychiatric services; of these, n=56 (25.2%) were defined as E-TR and n=24 (12.6%) were defined as L-TR. Using known risk factors for poor schizophrenia outcomes, we developed prediction models for E-TR and L-TR using LASSO and RIDGE logistic regression models. Models' internal validation was performed employing Harrell's optimism-correction with repeated cross-validation; their predictive accuracy was assessed through discrimination and calibration. Both LASSO and RIDGE models had high discrimination, good calibration. While LASSO had moderate sensitivity for estimating an individual risk for E-TR and L-TR, sensitivity estimated for RIDGE model for these outcomes was extremely low, which was due to having a very large estimated optimism. Although it was possible to discriminate with sufficient accuracy who would meet criteria for E-TR and L-TR during the 5-year follow-up after first contact with mental health services for schizophrenia, further work is necessary to improve sensitivity for these models." @default.
• W3093721844 created "2020-10-29" @default.
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• W3093721844 date "2020-12-01" @default.
• W3093721844 modified "2023-10-17" @default.
• W3093721844 title "Predicting onset of early- and late-treatment resistance in first-episode schizophrenia patients using advanced shrinkage statistical methods in a small sample" @default.
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• W3093721844 doi "https://doi.org/10.1016/j.psychres.2020.113527" @default.
• W3093721844 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33126015" @default.
• W3093721844 hasPublicationYear "2020" @default.
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